Tack and brad driver



Nov. s, 192s. 1,690,588

W. R. MCCLUNEY TACK AND BRAD DRIVER Filed Sept- 9, 1927 2 Sheets-Sheet 1Nov. s, 192s. 1,690,588

w. R. MCCLUNEY TACK AND BRAD DRIVER Filed Sept- 9, 1927 2 Sheets-Sheet 2/7 a /--\,f; gif@ Q; /7

31a/vento@ Patented Nov. 6, 1928.

llltllTED STATES WILLIAM ROBERT MCCLUNEY,

F WARRENSBURG, MISSOURI.

TACK AND BRAD DRIVER.

Application filed September The present invention relates to aninstrument Which is designed to enable the Worker to use only one handin the process of inserting tacks and small brads.

An important object of the invention resides in the provision of aninstrument of this nature with a structure consisting of elements whichare easy to handle and manipulate, are arranged ina convenient andcompact manner, and otherwise thoroughly eflicient and reliable in useand operationn A further important object of the invention resides inthe provision of an instrument of this nature which is simple inconstruction, which is easy to assemble and disassemble, capable ofbeing manufactured at a low cost, and otherwise ivell adapted to thepurpose for which the same is designed..

Vit-.h the above and numerous other objects in View as will appear asthe description proceedsythe invention resides in certain novel featuresof' constructiony and in the combination and arrangement of parts aswill be hereinafter more fully described and claimed.

In the drawing z Figure 1 is an elevation of the instrument embodyingthe features of my invention,

Figure 2 is a similar view taken at right angles to that shovvn inFigure 1,

Figure 3 is a longitudinal section therethrough,

Figures 4 and 5 are transverse sections taken substantially on the lines4% and 5 5 respectively of Figure 1.

Figure 6 is a sectional elevation showing portions of the device Withparts for use with brads.

Referring to the drawings in detail it Will be seen that the numeral 5denotes a stock or handle shaped to conveniently fit in the hand havinga restricted neck portion 6. This stock or handle is provided with abore 7 having a reduced portion 8. An elongated cylindrical casing 9 isprovided With threads 10 intermediate its ends and extends up into thesmaller' portion of the bore 8 to terminate Within the bottom of thebore 7. The upper portion of this casing Within the bottom of the bore 7is formed with ka bayonet slot opening or the like 11. A permanentmagnet 12 is threadedly engaged on the casing 8 as at 10 and has itsends provided with pins 13 of magnetic material extending through thecasing 9. A plunger 14 is slidable through the casing to engage the pins13 and 9, 1927. `Serial No. 218,479.

the upper end of this plunger 14- is threadcdly engaged as at 15 With ashank 16 having a knob 17 adapted to fit in the upper end of the handle5. A spring 19 is disposed about the shank 16 and Ain'ipinges againstthe bottom of the bore 7 and the knob 17 to normally hold the knob 17 inthe dotted line position shown in Figure r be forced down to the fullline position shown vin Figure 3 so that a pin 20 on the plunger may beengaged in the bayonet slot 11 so as to hold the parts in this position.

The casing should be constructed of wrought or non-magnetic metal. Theiron or steel pins 13 are used for the purpose of conducting lires offorce to the plunger. The knob may be constructed of hard rubber and theshank my be made of hard Wood. The spring should be comparatively Weak.

In using this instrument it is held in the palm of the hand With theneck fitted between the second and third lingers. Thus when the plungeris released the hand is spread apart. This draws the tack inside thecasing plunger.` To insert the tack or brad the plunger is forced downand engaged by the palm of the hand with the instrument still in theposition as described above. lith the magnetized plunger down the headof the tack or brad is attached and if the instrument is manipulated ashas been previously instructed, the Worker Will have no trouble inbecoming efficient with the tool.

In Figure 6 a slight modification is provided for use With brads. Parts9', 10 and 13 are similar to aforementioned parts 9, 10 and 13,respectively. A sleeve 30 is held in place by screw 22 extending intoopening 31. A rod 32 extends through the sleeve 30. The sleeve 30 androd 32 take the place of the plunger le, the rod functioning as theplunger.

It is thought that the construction, operation, utility, and advantagesof the invention will now be quite apparent to those skilled in this artWithout a more detailed description thereof. The present embodiment ofthe invention has been disclosed in detail merely by Way of examplesince in actual practice it attains the features of advantage enumeratedas desirable in the statement of the invention and the abovedescription. It will be apparent that changes in the details ofconstruction, and in the i his knob may attached to the point of thelill) lll) combination and arrangement et parts inabe resorted toWithout departing "from the spirit or scope of the invention ashereinafter claimed or saeriieing any of its ad,- vantages. v

Having thus desoribediny invention7 what I elaiin as new is l. Aninstrument of ,the` class described comprising a handle having a boreextending therethrough, a cylindrical easingrextending into the bore, aplunger through the easing, nieane for ina otizing the plunger., a shankattached to the plunger, a knob on the end ot the shank, springassociated with the shank and tlieknobto normally hold the plungerretracted in the easing` n 2. An instrument of the class describedeoinprsing ra 'handle having lboreformed in a relatively large sectionand a relatively slnall section, a cylindrical easing extending into thesmaller Section and terminating Within the bottom of' 'the eert n? saidterminaton otthe oasiig being provided with aV bayonet slot, a plungerslidable tlireugn the easing and having a laterally extending pinadapted to be engaged with the Vbayonet slot, a shank on the plungerivitliin'the larger section oit' the bore, a l-nob on the shank, aspring engaged on the larger Section et the bore about the Sharliiinpinging against the bottoni or the larger eeetion oi" the bore andthe linob.

S An instrument of the class described ooinprisnig a handle having abore ornied in a relatively large section and a relatively Asmallsection, a cylindrical easing extending eli-fiable' n relati plungerWithin into the smaller section and terminating iiv'ithin the bottoni oftlie larger section, said termination or the easing being provided rwitha bayonetu slot, a Aplunger slidable through Athe easing and having alaterally ext-ending pin adapted to be engaged with the bayonet slot, ashank engaged on the Aplunger Within the larger seetion of the bore, 'aknob on the shank7 a spring engaged on the larger section or the boreabout the elianl; iinpinging against the bottom ot the se 4iion oit thebore and the knob7 and nieane inagnetizing the plunger.

' instrument ot the class described having a bore formed vely largeeectionand a relatively ,Canali section, a cylindr'eal easing extending`o the smaller section and terminating hin the bottoni or the largersection, said teriniinitwnl of the easing being provided with a bayonetslot, a plunger slidable through the easing and having a laterally l aiupin adapted to be engaged with the bayonet slot, a shank engaged ony thethe larger section ot' the bore, a knob on the shank, a spring engagedon the larger seetion ot the boro about the shank against the bottom ofthe larger Y i the bere and the knob, and inea-ns for inaeuetizlng Atheplunger, said means eoinpri 'ng a permanent magnet, means ior engagingthe permanent rmagnet on the Casino' and means ext-ending through theeasing `C, f in Contact With the poles of the permanent magnet,

'ln testiinonywhereof l aiiiX my signature. VHLLIAM ROBERT MGCLUNEY.

